Final Assessment: NIELIT O Level – IoT Applications

What is the main function of the Network Layer in the OSI model?

• Encryption

• Routing and forwarding

• Session establishment

• Error detection

Which of the following is a guided transmission medium?

• Bluetooth

• Wi-Fi

• Coaxial cable

• Infrared

MQTT protocol is best suited for:

• Large file transfer

• Real-time voice calls

• Lightweight IoT communication

• Database management

Which sensor is used to detect temperature?

• PIR sensor

• Thermistor

• Gyroscope

• Barometer

Zigbee protocol operates on which frequency band?

• 900 MHz

• 2.4 GHz

• 5.8 GHz

• 1.8 GHz

Which layer in IoT architecture is responsible for sensing the environment?

• Application layer

• Network layer

• Perception layer

• Processing layer

An actuator is a device that:

• Stores energy

• Reads digital signals

• Converts signal into motion

• Sends data to the cloud

Which protocol is used to access web pages?

• FTP

• SMTP

• HTTP

• POP3

Which microcontroller family is commonly used in embedded systems?

• Intel i7

• AVR

• Ryzen

• Pentium

What type of sensor is an ultrasonic sensor?

• Light sensor

• Motion sensor

• Pressure sensor

• Sound-based distance sensor